<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div id="app">
        <button v-on:click="remove">删除</button>
        <ul>
            <li v-for="(item,index) in arr">
                {{item}} {{index}}
            </li>
        </ul>
        <h2 v-for="(item,index) in obj">
            {{index}}
        </h2>
        <h3 v-for="(item,index) in arrobj">
            {{item}}{{index}}
        </h3>

    </div>
    <!-- 开发环境版本，包含了有帮助的命令行警告 -->
    <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
    <script>
        var app = new Vue({
            el: '#app',
            data: {
                arr: [1, 2, 3, 4],
                obj: {
                    name: '连浩伟',
                    age: '19',
                },
                arrobj: [{
                    name: '周'
                }, {
                    age: '52'
                }]
            },
            methods: {
                remove: function() {
                    this.arrobj.pop()
                }
            }
        })
    </script>
</body>

</html>